Light micrograph of smooth muscle cells, which are a type of muscle cell not under voluntary control and found in the gut and other organs in the human body. The smooth muscle cells are elongated and fibre-like in shape and have spindled nuclei (short linear dark purple structures) within their cytoplasm (longer pink structures). The smooth muscle cells are not highly ordered, but rather arranged in variably haphazard and intersecting directions, as can be seen in this image. Haematoxylin and eosin stained section. Magnification: x200 when printed at 10cm wide.